Usually the price of stained glass is a rather ambiguous value. Peculiarity of stained glass is in their diversity, which is due to the complexity of the artistic performance. That’s why it is impossible to establish a stable price for stained glass.
The only certain fact is that stained glass could not be repeated. If you want us to perform identical stained glass you’ll be offered other design but similar in style and technique. As a result you’ll get unique stained glass made especially for you!
This is an example of establishment of an appropriate price depending on the complexity of stained glass
Types complexity of the stained glass
Simple 
from 300$ on 1 m2
Average 
from 400$ on 1 m2
High 
from 500$ on 1 m2
Highly 
from 600$ on 1 m2